GIVEN:
We are given the function below;
[tex]f(x)=9x^3+2x-12[/tex]
Required;
To find the domain of the cubic function.
Step-by-step solution/explanation;
The domain of a function is the set of all input values (that is, x values) for which the function is defined.
For the function given, there is no constraint, which means the function is always true for any value of x.
Therefore,
ANSWER:
[tex]Domain=(-\infty,+\infty)[/tex]
The domain is the set of all real numbers.
Option B
